I think it would be cool to have an actualy shop plugin, so if you wanted to sell things you need to have a shop, and a merchants license (apply on forums)
I know we talked about duckshop, and here is another possibility. Take a look at it Pyth and give your opinion? I know we already have a shop plugin but I really like the idea of an actual shop... (See my post in shnaffles /money thread)

I really like this idea adds a realism to the server, not sure about the merchants liscense though I feel it could limit what newcomers could do. But /sign this. I love the idea of having to travel around to get the best price.